The solutions of the equation $$\(x^{2}+b x+c=0\)$$ are $$\(\frac{-7+\sqrt{61}}{2}\)$$ and $$\(\frac{-7-\sqrt{61}}{2}\)$$. Find the value of $$\(b\)$$ and the value of $$\(c\)$$. $$\[ \begin{aligned} &b= ............................................\\ &c= ............................................ \end{aligned} \]$$

Mathematics
IGCSE&ALevel
CAIE
Exam No:0580_s20_qp_42 Year:2020 Question No:9(b)

Answer:

\([b=] 7\)
\([c=]-3\)

Knowledge points:

E2.5.4 Derive and solve quadratic equations by factorisation, completing the square and by use of the formula.

Solution:

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